TY - JOUR TI - Phlorotannin and Pigment Content of Native Canopy-Forming Sargassaceae Species Living in Intertidal Rockpools in Brittany (France): Any Relationship with Their Vertical Distribution and Phenology? AU - Jegou, Camille AU - Connan, Solene AU - Bihannic, Isabelle AU - Cerantola, Stephane AU - Guerard, Fabienne AU - Stiger-Pouvreau, Valerie T2 - Marine Drugs AB - Five native Sargassaceae species from Brittany (France) living in rockpools were surveyed over time to investigate photoprotective strategies according to their tidal position. We gave evidences for the existence of a species distribution between pools along the shore, with the most dense and smallest individuals in the highest pools. Pigment contents were higher in lower pools, suggesting a photo-adaptive process by which the decreasing light irradiance toward the low shore was compensated by a high production of pigments to ensure efficient photosynthesis. Conversely, no xanthophyll cycle-related photoprotective mechanism was highlighted because high levels of zeaxanthin rarely occurred in the upper shore. Phlorotannins were not involved in photoprotection either; only some lower-shore species exhibited a seasonal trend in phlorotannin levels. The structural complexity of phlorotannins appears more to be a taxonomic than an ecological feature: Ericaria produced simple phloroglucinol while Cystoseira and Gongolaria species exhibited polymers. Consequently, tide pools could be considered as light-protected areas on the intertidal zone, in comparison with the exposed emerged substrata where photoprotective mechanisms are essential. DA - 2021/09// PY - 2021 DO - 10.3390/md19090504 DP - Web of Science Nextgen VL - 19 IS - 9 SP - 504 J2 - Mar. Drugs LA - English ST - Phlorotannin and Pigment Content of Native Canopy-Forming Sargassaceae Species Living in Intertidal Rockpools in Brittany (France) UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000700232200001 Y2 - 2021/10/14/14:24:32 KW - ACL KW - DISCOVERY KW - Interreg IVB project Biotecmar KW - UBO KW - antioxidant activities KW - ascophyllum-nodosum KW - bathymetry KW - brown alga KW - cystoseira-tamariscifolia KW - in-situ KW - intertidal algal distribution KW - laminaria-saccharina KW - muticum yendo fensholt KW - panorama KW - phenolic compounds structure KW - phenolic compounds KW - phlorotannins KW - photoprotective pigments KW - photosynthetic performance KW - seasonal-variation KW - tide pool KW - xanthophyll cycle ER -